成千上万的人们不得不花费更多的精力和时间学习新的技术和知识，使得他们在就业市场能保持优势。
第三， 宾语从句。
Eg: Some people claim that government should be mainly responsible for the environmental pollution.
一些人认为政府应对环境污染负主要责任。
Eg: Many experts point out that, along with the development of modern society, it is an inevitable result and there is no way to avoid it.
许多专家指出这是现代社会发展必然的结果，无法避免。
第四， 同位语从句。
Eg: It is an undeniable fact that environmental pollution becomes increasingly serious.
环境污染变得越来越严重是不可否认的事实。
Eg: No one can deny the basic fact that it is impossible for average workers to master those high-technology skills easily.
没有人能否认这一基本事实：对于一般工人来讲，轻松掌握这些技术是不可能的。
第五，主语从句。
Eg: What has caught our attention is /It is noticeable that the environment in both the rural and urban areas is deteriorating.
值得注意的是农村和城市的生态环境都在不断恶化。
Eg: It is universally acknowledged that environmental pollution becomes one of the most serious problems in China or even the world as a whole.
众所周知，环境污染问题是中国乃至世界面临的最为严重的问题之一。
第六，强调句: It is ＋ 被强调的内容 ＋ that
Eg: It is cars and factories that release a great deal of gases, polluting the environment.
汽车和工厂排放大量的废气，使得环境被污染。
第七，倒装句。
Eg: Only if the government will take some appropriate measures, will this intractable problem be tackled.
只有政府采取适当的措施，这个棘手的问题才能被解决。
第八，被动语态。
Eg: Every means should be tried to protect the environment on which people live.
人们应竭尽全力来保护我们赖以生存的环境。
第九， 分词结构：包括现在分词和过去分词。
Eg: Tourism, which is a rising industry, has become the major source of economy, playing crucial role in many Asian countries.
旅游业是一个新兴的行业，它成为经济的主要来源, 在很多东南亚国家起着尤为重要的作用。
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